diff --git a/agent/src/octopus_agent/agent_server.py b/agent/src/octopus_agent/agent_server.py
index d04a13b..7cb3212 100644
--- a/agent/src/octopus_agent/agent_server.py
+++ b/agent/src/octopus_agent/agent_server.py
@@ -72,7 +72,6 @@ async def add_kernel(
                 config.get("max_iterations", 5),
                 self.verbose,
             )
-            # TODO a data dir per user
             self.agents[request.key] = {
                 "sdk": sdk,
                 "agent": agent,
diff --git a/build_package.sh b/build_package.sh
new file mode 100644
index 0000000..72149bc
--- /dev/null
+++ b/build_package.sh
@@ -0,0 +1,28 @@
+#! /bin/sh
+#
+# build_package.sh
+
+
+
+WORKDIR=`pwd`
+echo "$1"
+sed -i -E 's/version\s*=\s*"[^"]*"/version="$1"/' proto/setup.py
+sed -i -E 's/version\s*=\s*"[^"]*"/version="$1"/' kernel/setup.py
+sed -i -E 's/version\s*=\s*"[^"]*"/version="$1"/' agent/setup.py
+sed -i -E 's/version\s*=\s*"[^"]*"/version="$1"/' chat/setup.py
+echo "the proto new version"
+python3 proto/setup.py --version
+echo "the kernel new version"
+python3 kernel/setup.py --version
+echo "the agent new version"
+python3 agent/setup.py --version
+echo "the chat new version"
+python3 chat/setup.py --version
+# build octopus proto package
+cd ${WORKDIR}/proto && make && python3 -m build
+# build octopus kernel package
+cd ${WORKDIR}/kernel && python3 -m build
+# build agent package
+cd ${WORKDIR}/agent && python3 -m build
+# build chat package
+cd ${WORKDIR}/chat && python3 -m build
diff --git a/install_package.sh b/install_package.sh
new file mode 100644
index 0000000..13335e8
--- /dev/null
+++ b/install_package.sh
@@ -0,0 +1,9 @@
+#! /bin/sh
+#
+# install_package.sh
+
+WORKDIR=`pwd`
+cd ${WORKDIR}/proto && make && pip install .
+cd ${WORKDIR}/kernel && pip install .
+cd ${WORKDIR}/agent && pip install .
+cd ${WORKDIR}/chat && pip install .
diff --git a/kernel/src/octopus_kernel/server/kernel_rpc_server.py b/kernel/src/octopus_kernel/server/kernel_rpc_server.py
index 49184ca..24b74e1 100644
--- a/kernel/src/octopus_kernel/server/kernel_rpc_server.py
+++ b/kernel/src/octopus_kernel/server/kernel_rpc_server.py
@@ -236,7 +236,7 @@ def _build_payload(self, msg, workspace):
         if msg["msg_type"] == "display_data":
             if "image/png" in msg["content"]["data"]:
                 filename = "%s.png" % uuid.uuid4().hex
-                fullpath = "%s/%s" % (data_dir, filename)
+                fullpath = "%s/%s" % (workspace, filename)
                 with open(fullpath, "wb+") as fd:
                     data = msg["content"]["data"]["image/png"].encode("ascii")
                     buffer = base64.b64decode(data)
diff --git a/start_sandbox.sh b/start_sandbox.sh
index 7dbccd7..6b53ba0 100644
--- a/start_sandbox.sh
+++ b/start_sandbox.sh
@@ -3,11 +3,7 @@
 # start_local.sh
 ps -ef | grep python3 | grep -v grep | awk '{print $2}' | while read line; do kill -9 $line; done
 WORKDIR=`pwd`
-
-cd ${WORKDIR}/proto && make && pip install .
-cd ${WORKDIR}/kernel && pip install .
-cd ${WORKDIR}/agent && pip install .
-cd ${WORKDIR}/chat && pip install .
+bash install_package.sh
 
 mkdir -p ${WORKDIR}/sandbox/kernel
 mkdir -p ${WORKDIR}/sandbox/agent